Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 19

Waxing Crescent 12%

06:26

00:03

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:54, Set: 20:58, Transit: 12:56. Moon - Rise: 06:26, Set: 00:03. Civil Dark: 21:43 - 04:09. Nautical Dark: 22:48 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
99
99
99
100
100
100
100
100
100
100
96
100
98
99
90
99
98
99
100
95
97
99
100

Low Clouds (% Sky Obscured)

60
60
74
81
83
87
90
95
96
100
100
84
47
71
36
25
44
47
41
49
58
54
48
41

Medium Clouds (% Sky Obscured)

88
99
99
99
100
100
100
100
95
88
29
74
96
94
99
90
98
82
79
98
93
96
98
99

High Clouds (% Sky Obscured)

3
5
32
14
100
100
100
100
100
52
100
81
100
74
73
71
88
96
38
97
37
62
88
65

ISS Passover

Visibility (miles)

9
9
8
7
9
6
9
4
9
9
9
9
9
6
5
4
5
4
4
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
None
None
None
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

6
41
57
71
83
95
95
74
60
65
30
20
29
49
58
65
80
77
74
51
38
17
5
5

Precipitation Amount (mm)

0
0
0.2
0.4
0.4
1.1
1.2
0.2
0
0.3
0
0
0
0.2
0.2
0.3
0.5
0.4
0.4
0.3
0
0
0
0

Wind Speed/Direction (mph)

10
11
11
12
15
16
17
18
18
18
18
17
15
17
16
16
15
16
15
14
13
12
14
14

Chance of Frost

Temperature (°C)

11
11
10
10
9
10
10
10
11
11
11
12
13
16
16
17
15
15
15
14
14
13
12
11

Feels Like (°C)

8
7
6
5
4
4
5
5
5
6
6
8
9
12
13
13
12
12
11
11
11
10
9
7

Dew Point (°C)

11
10
9
9
8
9
9
10
10
10
11
11
12
13
14
14
13
13
13
12
12
12
11
10

Relative Humidity (%)

95
93
93
93
95
95
95
95
96
95
96
96
93
82
83
82
86
87
87
87
89
93
90
90

Pressure (mb)

1010
1010
1010
1009
1009
1008
1007
1007
1007
1007
1007
1007
1006
1006
1005
1005
1005
1005
1006
1006
1007
1007
1008
1008

Ozone (du)

373
372
372
375
379
379
385
388
389
385
383
384
385
383
383
383
384
384
387
390
390
389
393
395

Wednesday 20

Waxing Crescent 21%

07:49

00:55

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:53, Set: 20:59, Transit: 12:56. Moon - Rise: 07:49, Set: 00:55. Civil Dark: 21:45 - 04:08. Nautical Dark: 22:51 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
95
91
92
80
85
63
65
67
79
94
82
98
88
84
86
77
94
88
95
72
82
89
99

Low Clouds (% Sky Obscured)

44
50
81
67
48
63
48
53
66
49
49
15
44
38
34
40
42
78
59
57
58
57
39
1

Medium Clouds (% Sky Obscured)

99
64
41
78
75
29
5
4
20
35
49
41
59
49
40
51
57
68
67
64
55
45
18
73

High Clouds (% Sky Obscured)

78
40
28
0
0
0
0
0
0
0
0
0
0
0
2
5
5
38
31
71
16
27
84
95

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
9
7
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
17
12
15
7
4
8
2
1
5
5
21
28
32
43
41
22
16
6
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
15
14
14
15
14
14
14
15
17
17
15
16
16
16
16
17
16
14
12
10
9
8
9

Chance of Frost

Temperature (°C)

11
11
10
11
11
11
11
12
12
14
15
15
16
17
17
17
18
18
17
16
16
14
13
13

Feels Like (°C)

6
7
6
6
6
7
7
7
8
10
10
11
12
13
13
13
14
15
14
15
13
13
12
11

Dew Point (°C)

10
10
9
9
9
9
9
9
9
9
9
10
10
10
11
12
13
12
12
11
12
12
12
12

Relative Humidity (%)

91
91
90
91
90
88
86
86
81
73
70
73
68
66
68
74
73
71
70
72
79
87
92
95

Pressure (mb)

1008
1009
1009
1009
1009
1010
1011
1012
1012
1013
1013
1014
1015
1015
1016
1016
1016
1017
1018
1018
1019
1020
1021
1021

Ozone (du)

399
400
398
397
393
389
379
376
377
380
379
377
374
367
362
359
355
351
347
345
345
345
344
344

Thursday 21

Waxing Crescent 31%

09:20

01:29

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:52, Set: 21:01, Transit: 12:56. Moon - Rise: 09:20, Set: 01:29. Civil Dark: 21:47 - 04:06. Nautical Dark: 22:53 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

92
100
87
85
100
100
100
95
90
89
96
98
95
92
98
97
88
78
79
86
88
100
100
98

Low Clouds (% Sky Obscured)

3
0
0
0
57
76
80
73
58
73
71
86
84
60
90
85
73
66
37
34
18
0
0
0

Medium Clouds (% Sky Obscured)

76
81
64
48
45
41
61
27
25
30
30
96
58
64
76
17
34
26
15
25
38
42
81
86

High Clouds (% Sky Obscured)

57
99
50
53
100
100
99
86
50
11
42
9
65
74
71
65
14
15
50
53
60
99
99
93

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
1
8
36
26
15
4
2
3
12
21
2
0
2
4
2
14
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
8
8
8
8
7
8
10
11
13
12
12
11
13
12
11
10
9
8
7
7
6
6

Chance of Frost

Temperature (°C)

12
11
11
10
10
10
11
12
14
16
17
16
17
18
20
21
21
21
21
20
19
17
16
15

Feels Like (°C)

10
11
9
10
10
8
9
10
12
14
15
13
15
17
19
19
19
20
20
21
20
17
15
15

Dew Point (°C)

11
11
10
10
10
10
10
11
11
12
12
13
13
14
15
15
15
16
16
17
16
15
15
14

Relative Humidity (%)

96
95
96
96
96
96
95
92
84
77
71
78
79
77
70
69
70
71
75
79
84
88
92
92

Pressure (mb)

1021
1022
1022
1022
1022
1022
1023
1023
1024
1024
1024
1024
1025
1025
1025
1025
1024
1024
1024
1025
1025
1025
1025
1025

Ozone (du)

343
344
343
343
342
342
342
343
342
343
342
340
342
342
343
341
340
338
337
338
337
337
337
338

Friday 22

Waxing Crescent 42%

10:50

01:50

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
13 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:50, Set: 21:02, Transit: 12:56. Moon - Rise: 10:50, Set: 01:50. Civil Dark: 21:48 - 04:04. Nautical Dark: 22:56 - 02:57. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

93
77
70
52
42
37
28
27
27
27
29
25
30
36
82
87
87
88
86
89
91
95
96
88

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
2
3
5
7
9
10
7
3
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

70
38
36
28
33
29
21
16
18
15
15
15
15
18
24
27
27
34
82
86
89
92
41
33

High Clouds (% Sky Obscured)

76
56
32
5
4
2
0
0
1
1
1
0
4
5
52
48
49
46
52
61
77
92
94
87

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
6
6
6
6
6
6
7
8
9
10
11
12
12
12
11
10
9
8
7
6
6
6

Chance of Frost

Temperature (°C)

15
14
13
12
12
11
12
13
16
18
20
21
23
24
24
25
25
24
24
23
21
20
18
17

Feels Like (°C)

14
13
13
13
11
11
11
13
16
18
19
21
23
24
24
23
24
24
24
24
22
20
18
17

Dew Point (°C)

13
13
12
11
11
10
11
12
13
14
15
16
16
17
17
17
18
18
19
19
19
18
17
16

Relative Humidity (%)

92
93
93
93
93
93
92
89
83
77
72
70
67
64
62
62
65
69
71
77
84
86
90
93

Pressure (mb)

1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1024
1023
1023
1023
1024
1024
1024
1024

Ozone (du)

341
342
341
342
345
344
347
346
345
345
344
344
343
342
342
342
341
340
341
340
339
338
338
339

Saturday 23

First Quarter 53%

12:15

02:06

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:49, Set: 21:04, Transit: 12:56. Moon - Rise: 12:15, Set: 02:06. Civil Dark: 21:50 - 04:03. Nautical Dark: 22:59 - 02:54. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

86
79
100
100
100
100
100
100
100
100
79
90
100
93
86
79
63
49
35
44
54
63
57
51

Low Clouds (% Sky Obscured)

0
0
0
1
15
10
10
5
0
3
18
36
53
58
63
67
56
46
35
26
17
7
19
30

Medium Clouds (% Sky Obscured)

25
33
69
80
89
94
100
100
58
50
55
60
60
43
26
8
5
2
0
0
0
0
0
0

High Clouds (% Sky Obscured)

85
64
96
80
73
63
100
100
100
100
70
75
80
60
34
7
4
4
0
19
40
59
41
25

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
0
2
12
7
21
30
37
43
75
95
95
95
95
65
62
54
56
43
27
2
2
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.9
1.2
1.1
0.6
0.3
0.2
0
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
6
6
6
5
5
5
4
6
7
7
7
7
6
6
6
5
5
5
4
4
4
3

Chance of Frost

Temperature (°C)

16
16
15
15
15
15
16
16
16
18
19
19
19
19
20
20
21
20
20
20
18
17
16
15

Feels Like (°C)

16
15
15
14
14
14
15
15
16
17
18
19
19
18
19
19
20
20
20
20
20
20
20
18

Dew Point (°C)

15
15
14
14
13
14
14
14
15
15
15
14
13
13
13
13
14
14
15
15
15
14
14
13

Relative Humidity (%)

93
95
93
90
87
89
89
89
89
82
78
71
64
65
66
65
65
67
70
74
78
83
89
90

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1027
1027
1027
1028
1028
1029

Ozone (du)

339
339
339
341
344
347
352
354
355
357
355
350
344
340
338
337
336
334
332
330
328
326
324
322

Sunday 24

Waxing Gibbous 64%

13:36

02:17

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
12 OK
13 OK
14 OK
15 Good
16 Good
17 Good
18 Good
19 Good
20 Good
21 OK
22 OK
23 Bad

Sun - Rise: 04:48, Set: 21:05, Transit: 12:56. Moon - Rise: 13:36, Set: 02:17. Civil Dark: 21:52 - 04:01. Nautical Dark: 23:01 - 02:52. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

45
57
68
79
82
82
82
75
68
62
52
48
42
32
23
9
12
11
9
13
18
26
35
49

Low Clouds (% Sky Obscured)

39
44
47
52
58
58
61
59
53
45
37
28
20
13
7
0
0
0
0
9
16
24
35
49

Medium Clouds (% Sky Obscured)

0
1
2
3
2
3
3
4
5
5
3
2
1
1
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

11
26
42
60
53
45
37
35
33
32
25
21
15
11
6
3
3
3
3
3
4
4
3
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
4
3
3
3
3
4
4
4
5
6
6
6
7
7
8
9
8
8
7
6
6
5
5

Chance of Frost

Temperature (°C)

14
13
13
13
13
13
14
14
15
17
18
19
20
21
21
21
22
20
19
18
16
14
13
12

Feels Like (°C)

18
16
14
13
14
13
13
13
15
15
16
17
17
18
22
21
20
20
19
19
18
18
18
18

Dew Point (°C)

13
13
12
12
12
12
12
12
12
13
13
12
12
11
11
11
11
11
11
12
11
10
9
9

Relative Humidity (%)

92
95
95
95
93
92
90
89
82
76
69
63
58
53
51
51
50
55
60
67
70
75
79
80

Pressure (mb)

1029
1029
1029
1030
1030
1030
1031
1031
1031
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1033
1032

Ozone (du)

319
317
318
318
318
319
320
321
321
322
322
322
322
322
321
321
321
320
319
318
318
318
318
319

Monday 25

Waxing Gibbous 74%

14:53

02:27

Sun - Rise: 04:47, Set: 21:07, Transit: 12:57. Moon - Rise: 14:53, Set: 02:27. Civil Dark: 21:53 - 04:00. Nautical Dark: 23:04 - 02:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 19/05/26 00:38:12. Forecast: 19/05/26 to 25/05/26. Timezone: UTC+1.00